From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 12629C7EE26 for ; Thu, 11 May 2023 14:13:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238218AbjEKONa (ORCPT ); Thu, 11 May 2023 10:13:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237997AbjEKON1 (ORCPT ); Thu, 11 May 2023 10:13:27 -0400 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 227E7A240; Thu, 11 May 2023 07:12:41 -0700 (PDT) Received: from smtp202.mailbox.org (smtp202.mailbox.org [10.196.197.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-102.mailbox.org (Postfix) with ESMTPS id 4QHDNb6kB2z9sZD; Thu, 11 May 2023 16:11:59 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dylanvanassche.be; s=MBO0001; t=1683814319; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=l2otcDdUshgA/c9L7n2sngTXTgjQKeWeYo6cxQJutfE=; b=VO9CwJzGrBO1Spq63OV3oM5pIeShIfHHKAr8IWzkHKJUP+gGR6ZYeI53x9m7Q5+h8ByFJf v7mvRcPkmBztyE6xxsXnDtU9vHJ9pdfezDSNUA9VBdcYd/w4HBSlxPUyY9euIHJbLW1io8 8tm8vau+bxg+/c05UYrtklYN28EHOTkASLv9UZTpNfGkS4tsh/MtPCHJB85QdB88c7RBbn +2mtkrky87rJn6x4I3Db+AzL++HyqDm/3zA98XsfHLFZzFHNWoSwBmKuxx7va5VWwkhhIB 29gOMPhPm8Ah01gjkGyLqetyiZDd28nXHS0E2GQDyYYKXJpx7We5PjtNrr79Eg== From: Dylan Van Assche To: srinivas.kandagatla@linaro.org, amahesh@qti.qualcomm.com, arnd@arndb.de, gregkh@linuxfoundation.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, dan.carpenter@linaro.org, Dylan Van Assche , Caleb Connolly Subject: [PATCH v4 1/2] misc: fastrpc: support complete DMA pool access to the DSP Date: Thu, 11 May 2023 16:11:45 +0200 Message-Id: <20230511141146.30465-2-me@dylanvanassche.be> In-Reply-To: <20230511141146.30465-1-me@dylanvanassche.be> References: <20230511141146.30465-1-me@dylanvanassche.be> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org To support FastRPC Context Banks which aren't mapped via the SMMU, make the whole reserved memory region available to the DSP to allow access to coherent buffers. This is performed by assigning the memory to the DSP via a hypervisor call to set the correct permissions for the Virtual Machines on the DSP. This is only necessary when a memory region is provided for SLPI DSPs so guard this with a domain ID check. Signed-off-by: Dylan Van Assche Reviewed-by: Caleb Connolly --- drivers/misc/fastrpc.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index f48466960f1b..1ced553ae959 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -2231,6 +2231,8 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) int i, err, domain_id = -1, vmcount; const char *domain; bool secure_dsp; + struct device_node *rmem_node; + struct reserved_mem *rmem; unsigned int vmids[FASTRPC_MAX_VMIDS]; err = of_property_read_string(rdev->of_node, "label", &domain); @@ -2274,6 +2276,19 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) } } + rmem_node = of_parse_phandle(rdev->of_node, "memory-region", 0); + if (domain_id == SDSP_DOMAIN_ID && rmem_node) { + rmem = of_reserved_mem_lookup(rmem_node); + if (!rmem) { + err = -EINVAL; + goto fdev_error; + } + + qcom_scm_assign_mem(rmem->base, rmem->size, &data->perms, + data->vmperms, data->vmcount); + + } + secure_dsp = !(of_property_read_bool(rdev->of_node, "qcom,non-secure-domain")); data->secure = secure_dsp; -- 2.40.1